As the wheelchair tennis matches got underway, two competitors pulled their foreheads together and sang the theme song to Disney's 'Frozen' bringing a crowd to tears.

In a moment that epitomised the spirit of the Invictus Games, Dutch player Edwin Vermetten rushed to the aid of his UK partner and former mine warfare specialist Paul Guest, who was left visibly upset by a helicopter flying above the court.

Guest who was left partially deaf, visually impaired and suffering neck and spine damage from an on-duty injury, was unable to complete his serve after the sound of the helicopter triggered an immediate emotional reaction from him.

Halting play in the midst of a nail-biting tie breaker against United States duo Austin Chance Field and Brian Williams, Dutchman Vermetten rushed to comfort his partner.

Vermetten pulled Guest into an embrace, leaving the crowd of spectators in tears.

Following the match Vermetten revealed the pair sang "the 'Frozen' song" together to break the tension.